TeaSpeak/tomcrypt
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deterministically build crypt.pdf

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This entails:

 • Using pdflatex to influence the modification/creation timestamp in
   the resulting PDF
 • Replacing the unique ID with 0/0
 • Using the timestamp from crypt.tex instead of the current date/time

See also http://superuser.com/a/130804

This change is necessary because for Multi-Arch Debian packages,
non-arch-dependent files need to have the same checksum, which is not
guaranteed without this commit. See http://bugs.debian.org/734109
This commit is contained in:
Michael Stapelberg 2014-01-04 16:30:49 +01:00 committed by Steffen Jaeckel
parent ed9940175d
commit 4ab63ccd3a
1 changed files with 12 additions and 2 deletions
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14
makefile
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@ -373,14 +373,24 @@ doxy:
#delete it if we are rebuilding it.
docs: crypt.tex
rm -f doc/crypt.pdf $(LEFTOVERS)
cp crypt.tex crypt.bak
touch --reference=crypt.tex crypt.bak
(echo "\\def\\fixedpdfdate{"; date +'D:%Y%m%d%H%M%S%:z' -d @$$(stat --format=%Y crypt.tex) | sed "s/:\([0-9][0-9]\)$$/'\1'}/g") > crypt-deterministic.tex
echo "\\pdfinfo{" >> crypt-deterministic.tex
echo "/CreationDate (\fixedpdfdate)" >> crypt-deterministic.tex
echo "/ModDate (\fixedpdfdate) }" >> crypt-deterministic.tex
cat crypt.tex >> crypt-deterministic.tex
mv crypt-deterministic.tex crypt.tex
touch --reference=crypt.bak crypt.tex
echo "hello" > crypt.ind
latex crypt > /dev/null
latex crypt > /dev/null
makeindex crypt.idx > /dev/null
perl fixupind.pl
latex crypt > /dev/null
dvipdf crypt
pdflatex crypt
sed -i 's,^/ID \[.*\]$$,/ID [<0> <0>],g' crypt.pdf
mv -ivf crypt.pdf doc/crypt.pdf
mv crypt.bak crypt.tex
rm -f $(LEFTOVERS)
docdvi: crypt.tex